Automatic grid-pasting machine



March 26, 1929- H. J. McKENzlE AUTOMATIC GRID PASTING yMI'INE Fled O01.. 28. 1920 15 Sheets-Sheet 1 Heng J/w/rfA/z/f. 5f. www,

if) GMM/MW 'March 26, 1929. H AJ, M'CKENZIE 1,706,799

AUTOMATIC GrRIDv PASTING MACHINE Filed Oct. 28. 1920 125y Sheets-Sheet 2 March 26, 1929. H. J, MCKENZIE 1,706,799

AUTOMATIC GRID PASTING MACHINE F11-ed oct. z8. 1920 15 sheets-Sheet .5

March 26, 1929. H. J. MCKENZIE AUTOMATIC GRID PASTING MACHINE 15 sheets-sheet 4 Filed Oct. 28. 1920 March 26, 1929. H J, MGKENZIE I AUTOMATIC GRID PASTING MACHINE l Filed 061.28. 1920 15 sheets-sheet 5 Marb 26, 1929. H. J, MCKENZIE n 1,706,799

AUTOMATIC GRID PASTING MACHINE Filed Oct. 28. 1920( 13 Sheets-Sheet 6 www l ,March 26, 1 929. H. J. MCKENZIE AUTOMATIC GRID PASTING MCHINE 13 sheets-sheet 7 Filed OCT.. 28. 1920 March 26, 1929. H J, McKENzlE 1,706,799

AUTOMATIC GRID PASTING MACHINE Fi'iedroct. 28. 1920 13 sheets-sheet 8 March 26, 1929. H. J. McKENzlE 1,706,799

AUTOMATIC GRID PASTING MACHINE Filed oct. 28, 1920 15 sheets-sheet 9 March 26, 1929.

H. J. MCKENZIE AUTOMATIC GRIDv PASTING MACHINE 'A Fired oct. 2a. 1920 13 Sheets-#Sheet 1l annual! March 26, 1929.

H; J. McKi-:NzlE AUTOMATIC GRID PASTING MACHINE Filed Oct. 28. 1920 15 Sheets-Sheet 12 March 26, 1929. H J, MCKENZIE A1,706,799

AUTOMATIC GRID PASTING MACH-INE Filed oct.. 28. 1920 ya Sheets-Sheet .13

Patented Mar. 26, 1929.

UNITED STATES HENRY J. MOKENZIE,0F CLEVELAND, OHIO.

AUToMArIo earn-Purina macminerl Application led October 28, .1920. Seria1'No..-420,324.

' 15 the same tothe grids in a manner to be evenly distributed upon said means in order that the active material will be evenly the grids to completely fill the designated portions thereof; and to automatically deliver the grids at proper intervalsy and in the proper positions to be acted upon by the means for pasting the grids, said delivering meansincluding means for conveying the grids to a iinishing or smoothing arrangement, whereby all surplus active material will be removed and conducted back to means for mixing the same. f

Another object of the invention is to pro-4 vide means for automatically stopping 'the active material feeding mechanism when the supply of grids hasbeen exhausted, thereby preventing clogging of the -machine and waste of material. f v

@ther objects and advantages of the invention .will become apparent during the course of the following description.

lin the accompanying drawings, forming a part of the application, embodiments of my invention'wliich'are at present preferred are shown, but it is'to be understood that I do not desire to limit myself to `the construction, arrangement and combination of the various parts herein shown, and that l may resort to various changes in the construction, arrangement and combination of the various` parts of the invention to be hereinafter described and set forth in the appended claims.

ln the drawings, wherein like numerals are employed to designate lilre parts throughout the several views- Figure l vis an end elevation of theinv'em tion.

asted upon Figure 2 is a transverse ysection through the y Same.

Y Figures 3 and 4 are fragmentary longitudinal sections through-the same. Figures 5 and 6 are fragmentary top plans of the invention.- f'

Figure 7 is an enlarged detailsection'of a part of the grid pasting mechanism. 4 Figure 8 is an enlarged fragmentary sectionof a part of the grid pasting mechanism.

Figure 9'is' an elevation of apart of. the above arrangement.

' Figures 10 and 11 are plan and elevation of another part of said arrangements.

Figure 12 is a transverse section of one of the active material Ypassage ways.

Figures 13 and 14 are details of other parts of the pasting mechanism.

Figure 15 is an end elevation of the feed member.

Figure 16 is a side elevation of the same.

lFigure 17 vis a side elevation of the grid feeding mechanism. Figure 18 is an end elevation of the same.

Figure 19 is a fragmentary plan of the upper end of the feed mechanism.

Figure 20 is a fragmentary side elevation of a portion of the feed mechanism.

Figure 21 is a top plan of the same.

Figures 22 and 23 are details of the feed mechanism.

Figures 24, 25, 26 and 27 are details ofthe automatic stop mechanism, and- Figures 28,y 29, 30 and Blare views of the endless conveyor.

In the manufacture of electric storage battery electrodes, better known as plates, a lead grid or foraminous plate forms the foundation of the' electrode. Lead oxide and other ingredients are used in making the active material whichLis applied or asted upon the grids, the active material be ore being formed upon the grids being of about the consistency of soft putty. Heretofore in most instances this active material has been applied or pasted upon grids by hand, by means of smearing the active material upon opposite sides of 'the grid with wooden paddles. Thepresent invention has therefore been deslgned primarily to apply tite active material to the grids by machine, thereby, greatly increasing the output of the electrodes and consequently mit,

storage batteries to meet the ever increasing demand for such products.

ln the accompanying drawings wherein for the purpose of illustration is shown the preferred embodiment of the invention, l

ave illustrated a machine of a plural unit type for very high production, but it is of course understood that the machine may be constructed with only one unit in cases where high production is not essential., Ilhis invention embodies a mechanism for thoroughly mining the ingredients Jfor making the active material and consists of a hopper l arranged at each end of the machine and connected by a double longitudinally extending track way 2 as moet clearly shown in Figures 4c and e. rlhis track way' is oi trough shape in cross section9 the bottom thereof bei-ng provided with apertures for the purpose of permitting the oxide powder, which is conveyed romthe hoppers b 1 an endless conveyor 3s to descend into a vi rator a arrangedv therebeneath. The endless conveyor consists of a -cable 5 engaged about the special sprockets 39 one oi which is mounted horizontally in the bottom of each hopper. Each sprocket consistent a plurality of spaced radiating arms il', as most clearly seen in Figure 5, which arms at their extremities are provided with grooves for the reception of the cable 5 and between each two arms, a shoulder 8 is provided ior engagement with the disks 9 secured at intervals along the conveyor cable 5. y llt will be noted that the edge of each arm adj acent the shoulders is cut away so as to permit `oi2 the disks 9 conveying the oxide powder from the hopper l. Each disk of the conveyor is provided with cut out portions as most clearly seen in llligure 2, so that the oxide powder may be spread along the double track way and :orced through the apertures therein.

7lihe vibrator i arranged beneath the double tracht and above the dared mouth of the longitudinally extending mixing chamber l()g consists oi? elongated tray.) tshaped in cross section and equipped in its bottom with longitudinally ehtending slot, or openings, whereby the oxide powder may drop into the mining chamber., ytlpposi'te ends of the vibrating tray fl are provided with longitudinally extending outwardly projecting pintles 'il which are adapted reciprocation in brackets i2 secured to opposite ends oi the machine. To one of these pintles is pivot ally connected an eccentric rodl3 having its eccentric Af mounted upon a transversely extending shatt lo which is mounted in suitable brackets upon the end out the machine. As moet clearly seen in Figure l., one end ot this shaft is ertended beyond its bearing bracket and is equipped with sprocket i6 which is rotated by a sprocket chain if( engaging a similar sprocket 18 upon a stub shaft 19 upon the oil the machine and receiving motion bearings at opposite ends of the machine.

weaves through the intermediacy et beveled gears 20 and 2l, a sprocket 22 and a sprocket chain 23 engaging the last named sprocket, and a sprocket 24 mounted upon a driven shaft 25 extending longitudinally of the machine and journaled in suitable bearings carried by the frame of the machine.

As best seen in Figure 6, the driven shaft 25 is-provided with a relatively large gear 26 which meshes with a smaller gear 27 mounted upon a power sha-tt 28 journaled ii clutch 29 is associated with the power shaft, whereby rotation of the driven shaft is controlled at the will of the operator. @ne end of the power shaft is extended beyond the frame of the machine and equipped with a large gear 30 which is adaptable to operate the invention. f

Directly above the driven shaft 25 and eX- tending longitudinally of the machine to be journaled inv-bearings 3l at the ends of the frame is a conveyor shaft 32 upon which is keyed a Geneva stop or Geneva wheel 33 having four radial equally spaced slots therein. A laterally extending pin 34 carried by a dislr 35 keyed to the driven shaft is adapted for cooperation with the Geneva wheel for intermittently operating the same.

Returning to the mirinon chamber 10, shafts 36 extending longitudinally through the mixing chamber have opposite ends extended through bearings formed upon the opposite ends of the mixing chamber. llhese shafts extend in spaced parallel relationship `andl each is equipped with a plurality oi blades or-paddles 37 arranged at dilierent angles around their respective shafts, the blades ot one shaft being adapted to pass between the blades of the coacting shaft so that the oxide powder falling into thermixing chamber from the vibrator will drop upon the blades and become thoroughly mixed with the liquid ingredients ol" the active material which enter the top oi' the mixing chamber through pipes 38 branching from a main supply pipe 33'. This main supply pipe is arranged vertically ot the machine and en ters a pumping mechanism e() ae most clearly shown in lligurel, arranged on the base oi the machine and operated by means of a sprocket chain all engaging a sprocket keyed to the driven shaft 25. 'lhe extended end oi each mining shaft 36 is provided with a sprocket a2 and one ci the shafts is equipped with an additional sprocket i3 Jfor engagement with a sprocket chain ad leading from a sprocket l5 lreyed to the driven shaft. A sprocket chaindt engages sprockets l2 whereby the blades'oii the mixing shafts 36 are rotated in a manner that they will move inwardly toward each other as clearly shown by the arrows in Figure 2. Y A

The special sprockets 6 within the hoppers l receive rotation from one of the sprockets esv lll() llll being secured to a vertical shaft 47 having its lower end equipped with a worm gear 48 adapted for meshing engagement with a similar worm 49 keyed to'the extended end of one of the mixing shafts 36.

The bottom of the mixing chamber 10 is provided with an opening or aperture'50 for each unit, which will presently be described, and at opposite ends with openings which communicate with vert-ical conduits 51 arranged at opposite ends of the machine. The openings in the bottom of the mixing chamber are controlled by slidingA valve plates 52 which slide across the openings and are extended to one side of the machine. The valve plates are connected together and to a common nut 53adapted for longitudinal movement along a screw shaft 54 having opposite ends journaled in brackets extending from the side of the machine. The outer end of the screw shaft is provided with a beveled gear 55 for engagement with a smaller gear 56 mounted upon a shaft 57. This shaft is driven by a sprocket 58 mounted thereon and a chain 59 engaging a sprocket 60. The last mentioned sprocket is keyed to a shaft 61 extending longitudinally of the machine, and directly beneath this shaft is mounted a similar shaft 62 it of course being understood that any suitable means can be provided .upon the shaft 57 whereby the valve plates may be controlled at the will of the operator.

As stated before, a plurality of units are provided in the machine lillustrated herein and as they all are indentical in construction,

a description of one will suflice lfor all. As ,v `clearly seen in Figures 3 and 5, the units are spaced apart for a purpose whichewill appear hereinafter. Each unit consists of upper and lower conduits 63 spaced vertically, the upper conduit being'in communication with the opening in the bottom of the miiring chamber, while the lower screw conduit coinmunicates with a llongitudinally extending conduit 64 which is of'three different diameters as clearly seen in Figure 3 for a purpose which will. presently appear. As the units on one end of the machine are grouped together and the three on the opposite end are similarly grouped, a longitudinally extending passage way 64 is provided foreachthree units of a group. A screw 65 extends longitudinally of each of the screw passages 63 and one end of the screw shaft upon which the screw is mounted isjournaled ina spider 66v as most clearly shown in Figure 12 arranged at the inner end ofthe screw passage 63, while the opposite end of the screw shaft is journaled in a head secured to the outer end of the screw passage. The outer end' of eachy screw shaft is extended beyond the head of the passage and is equipped with a clutch mechanism. This mechanism consists yof a clutch member 67 sli'dably mounted u on the end of each shaftand a clutch mem yer carried byl a beveled gear 68 loosely mounted upon the'free endof each screw shaft.' These beveled gears 68 are adapted for meshing engagement with the beveled gears 60 mounted lupon the longitudinally extending shafts l61 and 62 and in this way rotary movement is v imparted from these shafts to the screws 65.

As clearly seen in Figure 1, each of the shafts 61 and 62 is provided with a-sprocket l screw passage 63 with an enlarged arcuated shell 75, the end thereofadjacent the screw being substantially circular, and the opposite end thereof is' open. As clearly seen Yin Figure 2,`the open ends of these two shells Vface toward each other and are slightly spaced apart so that grids may.' readily pass horizontally therebetween, ltA is'l to be par ticularlyl noted Vthat the outer edge 76 of each open end ofthe shell is outwardly flared to facilitate entrance of the grids into vthe casing and to provide a cam surface for a purpose to be later disclosed.

A shaft 77 yis journaled through the lupperl shells 7 5 to extend longitudinally ef the machine, and .a similar shaft is journaled through all of the lower shells, it being noted that these two shafts are in the same vertical plane. The pu pose of thesey shafts is to impart oscillator movement to the two plungers`.78 mounted in the shells. of the shafts 77 are `extended beyond their bearings and the extended ends of the lowe The outer ends shaft are each provided with a gear 78 havy ing -vteeth one quarter ofthe way around its periphery. `The extended ends of the upper shaft.77 are each provided with asimilar gear 79 having a lever 80 extended therefrom and formed integral therewith. One end of a rod 81 is pivotally connected to the' free end of the lever 80, while the opposite end is provided with a yieldable connection 82 for engagement with one end of `a forked lever 83. This lever ispivotally mounted between its ends and its free endV is bifurcated as at 84, a pin 85 ofa lever 86 being adapted formovement in the bifurcation to rock the forked lever an-d'conse'quently oscllate the two shafts 77. The crank arm 86 -is secured to a'gear 87 fixed upon the extended end of a screw shaft 88 mounted for rotation longitudinally in the screwpassage 64, as most clearly seen in Figure 4. It will of course be understood that a simil-ar screw shaft is mounted within the other longitudinally extending screw passage l, as clearly seen in Figure 3, the extended end of lthis shaft being provided with a gear 84'.. lt will also be noted that each screw shaft 88 is ot three different diameters to lit the various diameters ot screwfpassage 6l, whereby an equal amount of active material will be edto all" three lower screws of this respective group. A sprocket 89 is lreyed to the extended end of each screw shaft 88 whereby rotary movement may be imparted to the screwshaft through the intermediacy of a sprocket 90 secured to the driven shalt and a sprocket chain 91 on one end of the machine and -a` sprocket 92 clutched to the shalt 32 driving a .sprocket chain 93.

Rotary movement oit the sprocket 87 is obtained through the medium ot a segmental gear 94 having teeth at opposite points upon its periphery whereby the gear 84- and sprocket 87 will be intermittentlydriven and.

consequently the lever-33 will have an interrupted oscillatory .'ruovement.v d. sprocket 95 is secured to the gear 9d and a sprocket chain 96 engages over this sprocket and a sprocket 9'? keyed to the Vdriven shalt 25. 1

1n order thatthe plunger-s 78`n1a transfer the active material trom one si e thereot to the other, the plungers are :mounted` upon sectional shafts 98. These shafts are f arranged above and below'the shafts 77 .and

' are in the same vertical plane therewith as f. 103. lhese members are secured tothe ends.

ofthe sections 99 by Screws 10d extending longitudinally through the iemale members and the movable sections so in realit the lev male members form integral parts or sections vee 99. These female members 103 are circular in cross section inwhich the groove 102 isy provided and one end ol this circular portion is provided with an enlarged head portion,

10d.h in the end ot which is provided. a diamet- 'rically extending groove 105. els most clearly seen in .Figure 9, these 4t'emale membersv 103 are disposed outside of the shells 15 and the circular portions ot cooperating 'female members are mounted within the eyelet ends 106 or a pair et arms 107 torming a part ot a vlinlr member 108 which is secured to its .ud-'

jacent sha'tts 7'?. lt willl therefore be obvious that the plungers may swing in an yare ot a circle when the shafts 7l' are actuated.; However., tnat the shafts 99 may Referring more sacarse also rotate as a whole, a male section 108 is positioned between each pair otswinging sections 99. Each male section consists or a hub'` portion 109 having an enlargement 110 at each end thereof. A diametrically en, tending rib 111 is provided upon the end ot each enlargement 110 'for cooperation with thev groove 105 in the female members. 7llhe male'inembers vare mounted for rotation by hangers 112 engaging the axle portions 109 of thel male members. Each hanger has its bearing portion constructed into a pair of sections one ot' which 113 is resiliently held in cooperation with its coacting section. L'lhis is accomplished by extending screws through the-sect-i0n113 and threadin 'A them into the remaining section and providing springs 114: for engagement with the movable section so as to normally urge the same into engagement with its coacting section. Consequently it will be mani-test that when the male mem er is turned by movement of the plunger and is disengaged trom its female inembers,-it will remain in a position to be properly engaged by' the female members when the plungers return to their normal positions. From the foregoing, it will be obvious that when the shaft 98 rotates, all' sections therof will rotate when the plungers I9 are disposed in the position shown in Figure il. However., when the shaft 77 is actuated to oscillate a plunger, the female members l,103 will 'become disengaged from the male member, thereby permitting tree swinging movement oit the plungers. However, when 'they return to their normal positions in the end ot the pasting chamber. it 'will be seen that theV tongues 111 ot the male members will be received in the grooves 105 ot the female members so that all sections et the shalt 98 will rotate when the latter is actuated. 7The opposite dat 'faces of the two plungers are equipped with grooves 115 corresponding in design to the net work of bars of the grids ted into the machine so that the plungers may force the active material between the net lwork of bars without damaging the latter.

The shafts 98 receive rotary motion :trom sprockets 116 he ed to the extended ends ot ythe shafts whic .are extended beyond the units and a sproclret chain 11'?? engages the sprockets. it. Geneva wheel or Geneva stop 118 is secured to' the extended end ot the upper shaft 98 and spaced pins 119 carried b a diskf120 cooperate with the slots in the ceives motion trom the .driven shalt 25 A through the medium` of a sprocket wheel 122 lao neva wheel for intermittently rotating the y shaft 98'. A sprocket 121 is keyed to the shalt upon which `the dislr 120 is secured and reriding over a sprocket 125 keyed to the opposite end of the driven shaft 25, as clearly seen in Figure 6.

In order to provide an endless conveyor for the machine and for delivering the grids to a position between the plungers, the sprocket shaft 126 similar to the shaft 32 is mounted longitudinally ofthe machine and in the same plane with the sprocketshaft. In view of the fact that I contemplate a. separate conveyor for each unit, pairs of spaced relatively large sprockets 127 are keyed at spaced intervals along both shafts 32 and 126, the corresponding pairs on the two shafts being adapted for engagement with a pair of endless sprocket chains 128 of standard make. It will be noted that the two'chains 128 comprising a single endless conveyor a re spaced apart a. distance whereby the chains' are arranged beyond opposite sides of its respective unit. By referring more particularly to Figures 28, 29, and 31 it will be seen that pivot pins 129 at spaced intervalsalong the chains 128 are extended a substantial distance inwardly of the respective chain to receive thereon bed links 130. Flach bed link consists of a U- shaped member, the arms of which are received upon the pivot pin 129, it being noted that one of t-he arms 131 is considerably narrower than its coacting arm so that the extensions 132 of the double grids 133 will engage therewith and be carried along with the conveyor chain. In or'der that the extensions from the grids will be securely retained in enlragement with the bed links 130. a master link 134 is pivoted between its ends and between the arms of the bed link upon the pivot pin 129. The end of this link which overlies the bed link is equipped on its lower edge with squared depending nose 135 adapted for engagementwith the' upper surface of an extension of a grid. This n end of the link is also provided with a track engaging roller 136, while the opposite end ot' the link is equipped with a trundle roller 137. i f I The lower part of each upper shell 75 is provided with laterally projecting tracks 138 on opposite sides thereof, which are adapted to engage the rollers 136 of the master links and force the latter downwardly sov that the squared noses 135 rest upon the grid extensions 132 and clamp the same 'to the conveyor' whereby accidental displacement of the grids is prevented, while they are undergoing the pasting operation.

The means for smoothing and removing surplus active material from the grids after they have been pasted by the plungers, consists of a pair of spring; pressed opposed plates 139 disposed a distance to the rear of each unit; a pair of the plates being provided for each unit. These plates are slidably engaged with a'pair of spaced bars 140, and are normally urged together by coiled springs 143 suitably positioned to catch thematerial as it drops from the smoothing plates. From the slide, the surplus material is delivered onto an endless apron 144 extending longitudinally of the machine and engaged around rollers 145, one of which is mounted upon a stub shaft 146 carrying a sprocket 147. This sprocket is driven by a sprocket chain 148 engaging over a sprocket 149 mounted upon the extended end of the shaft 19. The other roller of the endless apron is `mounted upon the shaft 150carrying a sprocket 151. The sprocket 151 is carried on the shaft 150 which is driven by a chain connection from the sprocket 159 through the bevel gears 20 and 21.

Surplus material from the apron 144 is del livered to 'a vertically arranged endless conveyor 152 by a chute arrangement 153, as clearly shown in Figure 6. This conveyor consists of a double vertical tube 154 in whlch operates an endless cable 155 having secured thereon at spaced intervals, disks 156 which are disposed horizontally when passing through the tubes 154. Sheaves 157 are vmounted upon shafts 158 above andV below the tube so that the cable 155 may be received 1n the grooves of the sheaves and moved in the desired manner. The lower shaft 1.58 is extended and equipped with a sprocket-159 whereby a sprocket*- chain 160 may transmit movement between the conveyor sprocket 151 to the shaft 158. Adjacent the top of the conveyor, a chute 161 is provided and inclines downwardly to enter the mixing chamber 10, whereby all surplus material from the conveyor 152 is conveyedback into the mlxing chamber.

The means for delivering the grids to the endless conveyor and chain 128 consists essentially of an inclinedscrew 162 mounted for rotation in bearings 163 carried by a forwardly extending bracket 164 secured to the base of the machine. A screw drive shaft 165 is similarly mounted in the bracket 164, the upper en'd of the shaft being provided with a beveled gear 166 adapted for meshing engagement with a similar gear 167 loosely mountedi upon the shaft 126. As clearly seen in Figure 24, this beveled gear 167 is provided with a clutch member 168 adapted for cooperation with aclutch member 169 slidably mounted upon the shaft 126 and provided with an operating member 170 eiicircling the clutch operating member and pivotally supported by the bracket 164. The

yond the lower end of the bracket 164 and n' are equipped with meshing gears 173 where` by power from the shaft 165 is transmitted to the screw 162.

As best seen in Figures 17 and 18, the bearings 163 are connected by an inclined track 174 to opposite edges of which adjacent the top thereof are secured spring catches 175. The noses of the catches engage over the free ends of the retaining bars 176 p-ivoted at their lower ends as at 177 to the track 174. A retaining bar 176 is pivoted to each longitudinal end of the track 174 and when disposed iii a closed position as shown in Figure 17, slots 178 in opposite sides of the mecha- 'nism are provided for the reception of the lateral extensions 132 of the grids whereby they will be properly maintained upon the feeding mechanism in positions to be delivered to the endless chain 128.

As best seen in Figures 15 and 16, a feed member 179 of the grid feeding mechanism consists of'a nut member comprising a pair of jaws pivoted between their ends as at 181, whereby a bolt 182 may be pivotally connected to the free end of one jaw and threadedy through the. other jaw. A coiled spring 183 is positioned upon the bolt between the free ends of the jaws to normally urge the screw engaging ends of the jaws into engagement with the screw 162. This construction is provided for so that the feed member 179 may be returned to the bottom of the mechanism after the entire supply of grids has been ad'- vanced to the endless chain. The screw is provided with a table 184 which is equipped at opposite edges with lateral extensions 185 adapted to ride in the slots 178 provided by the retaining bars 176. As it will be remembered that the endless chain 128 moves intermittently through the intermediacy of the geneva 33, it will be appreciated that the screw 162 through the intermediacy of the shafts 126 and 165, will also be driven intermittently and consequently the feed member 179 will also be advanced intermittently and in proportion to the speed of the endless chain so that the grids upon the lfeed member will be in proper position to be engaged by the endless chain. v

It will of course be understood that I provide a feeding mechanism for each unit and in order to automatically stop any one of the feed mechanisms and paste feeding means for any one of the units when the supply of grids in the feeding mechanism has been exhausted,

pending portion 186 on the feed member 179,

as clearly shown in Figures 20 and 21, this portion being equipped with a cam member 187 adapted for engagement with the cam engaging roller 171 ofy the clutch operating member 170 when the feed member reaches the limit of upward movement upon the screw 162. l/Vhen the cani engages the clutch operating member 170, the latter is caused to swing upon its pivot and disengagc the clutch member 169 from the coacting clutch member 168 so as to stop rotation of the screw shaft 162. At the same time, the clutch operating member 170 throws the clutch out, it also slides a member 187 upon the shaft 126 so that a laterally extending pin 188 carried by this member is arranged in a position to engage a depending shoulder 189 of a bar 190 to move the same longitudinally during rotation of the member 187. This member is splined upon the shaft 126 so that it may rotate therewith and slide longitudinally thereupon when engaged by the clutch operating member 170. As a similar stop mechanism is provided for each feed mechanism and its coacting paste feeding means, a description of one will suffice for all. The bars 190 are ar.- ranged in a horizontal plane, one end of each lever being supported in proper position above the shaft 126, as clearly seen in Figure 26, by a laterally extending pin 191'carried by a bracket 192 engaging in a longitudinally extending slot 193 in the adjacent end of the bar 190. The opposite end of each bar is pivotally connected as at 194 to a shaft operating lever 195. carried by one of the shafts 196 which will presently be described.

In the present six lunit type of machine as illustrated, a lever shaft 197 is mounted longitudinal'ly in the rear of the clutch shaft 126, one lever shaft heilig provided for each three units. The tubular shaft 196, carrying a lcver 195 which is connected to the bar 190, is rotatably mounted upon a second tubular shaft 198 which in turn is rotatablymounted upon the lever shaft 197. Each of these shaft s 196, 197 and 198 is provided with a lever 195, it being understood that a shaft is provided for each unit of the group of three. A second lever 199 is formed integi'al with the lever 195 and extends in the opposite direction and is pivotally connected as at 200 to a rod 201. The opposite end of this rod is pivotally connected to the lower end of a clutch operating lever or member 202 which is pivotally supported as at 203` above the lower feed screw clutch 67 and in the rear of the head which closes the rear end of the screw passage 63.

In order that the upper feed screw 65 may iso to a clutch operating lever 208 similar in con-k struction to the clutch lever 202 for the lower screw 'and is mounted in the same manner, whereby the clutch of the upper screw may be operated.

From the foregoing, it will be seen that when vany bar 190 is moved longitudinally through the intermediacy of the grid feeding mechanism, the levers` 199 and 205 will be.

swung to throw out the clutches of the feed screws 65, thereby preventing the active material being forced into the pasting chamber when the supply of grids upon the feeding mechanism has been exhausted.

ln order that the cam engaging rollers 136 as clearly shown in Figure 30 may properly engage the pasting chamber whereby the master link 134;/ may be caused to clamp the grids upon the endless conveyor chain 128, a cam platform 211 is secured in a horizontal position to the upperend ofthe grid feeding mechanism or more particularly to the upper most' bearing 163. As clearly shown in Figure 17, the forward end 212 Vof, this Platform' is slightly inclined so as to engage with the rollers 137 of the master linksso as to tilt the same, whereby the cam engaging rollers 136 of the links will be thrown into engagement with the cam plate 138. As clearly shown in Figure 31, the platforms 211 for the intermediate units are provided with a double track 213, one track forming a runway for one side of one endless conveyor, 128, while the other track forms arun-way for one side of the adjacent conveyor. It will of course be seen that the cam plates 138 are secured by means' of screws 214 to an upstanding portion 215 of the platform 211, it being noted that the upstanding portion 215 is extended above the track 214, whereby the cam plate 138 is arranged in spaced relation to the platform. The operation of the machine is as follows: The grid feeding mechanism being intermittently operated and adapted to advance the' uppermost grid carried upon the platform 179 of the feed member to a position whereby the extensions 132 of the uppermost grid may be engaged by the 'bed links 131, it is timed so that the uppermost grid on the track Varranged in the feeding mechanism is always in position to be engaged by the bed links 130l as they reach the relative top of the sprocket 127. As stated before, the master links 134 clamp the said extensions upon the bed links and when the intermittently operated conveyor chain 128 is advanced, a grid is advanced to a position between the pasting shells in the path of movement of the oppositely acting plungers 7 8,. at which time the endless conveyor is brought to a stop. During this operation the material has been fed by the screws 65 through the spiders 66 and is evenly distributed upon the plungers 78. Through the intermediacy of the mechanism heretofore described, the plungers carry with them the paste which has been distributed thereuponso that the active material is disposed upon the faces of the plunger remote from the feed screw 65. Immediately after the plungers havel completed this operation,

the shafts 77 are oscillated through the medium of the forked lever 83 whereby the plungers are swung toward each other to apply the active material carried thereby to opposite faces of the grid' arranged in the pasting chamber. The space between the two plungers when they reach the extent of their oscillatory movement is less than the thickness ofthe grid and consequently the active.

material is forced' compactly between the interlaced bars of the grid.

As' soon as this operation has been completed, the endless conveyor 128 advances again to align another grid with the plungers. After this operation has been carried out two or three times, the first grid pasted is then passed between the spring pressed finishing plates 139 where the active material is smoothed upon the grid and all of the surplus active material deposited thereon is scraped off and delivered through the intermediacy of the slide 143 to the endless apron 144- The surplus active material is then'conveyed back to the mixing chlamber in the manner as setforth previously. When the pasted grids have reached the sprockets 127 in the rear of the machine, the master links release the grids whereby they may pass down a slide 216 to any suitable location.

The foregoing description and-the accompanying drawings have reference to the preferred or approved embodiment ofdmy invention... It is to be understood however, that such changes may be vmade in construction and arrangement of parts, materials, dimen-- sions, etc. as may prove expedient and fall within the scope of the appended claims;

Having thus fully described my invention what I claim as new and -desireto secure by Letters Patent is 1. In a grid pasting machine opposed plungers movable in an arc and being rotatable at one point in their travel to transfer material from location on one side of the axis 1 Vthereof adjacent one end ofthefchamber and which receives active material will be diS- 

